PUMP GP-GEAR 10R4478 - Caterpillar

Generator Set:
C6.6 (S/N: SDA1-UP; N6D1-UP; MRW1-UP)
Industrial Engine:
C4.4 (S/N: 4441-UP)
C6.6 (S/N: 6661-UP)
Description of Change: A new alternator has been introduced. When the engine is equipped with a heavy-duty alternator bracket and an automatic belt tensioner, a new bracket is required in order to fit the new alternator. Adaptable To: A new bracket is required in the following circumstances:
When replacing any of the following old alternator part numbers with any of the new alternator part numbers
Only when the engine is equipped with one of the old bracket part numbersRefer to Table 1 for the affected part numbers.
Table 1
Old Alternator Part Number     Old Bracket Part Number         New Alternator Part Number     New Bracket Part Number    
225-3144     289-8311     383-2556 339-5256    
346-9824    
221-3145     305-7881     383-2557
346-9825